<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{ this.city }}</div>
          </div>
        </div>
      </div>

      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">{{ item.name }}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{ key }}</div>
        <div class="item-list">
          <div
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
             @click="handleCityClick(innerItem.name)"
          >
            {{ innerItem.name }}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState,mapMutations} from 'vuex'
    export default {
         props:{
           hot:Array,
           cities:Object,
           letter:String
         },
         methods:{
           handleCityClick(item){
            //  alert(item)
            //  console.log(item)
            // this.$store.commit('changeCity',item)
            this.changeCity(item)
            this.$router.push('/')
           },
           ...mapMutations(['changeCity'])
         },
         computed:{
             ...mapState(['city'])
         },
         watch:{
              letter(){
                //  console.log(this.letter)
                if(this.letter){
                    const element = this.$refs[this.letter][0]
                    // console.log(element)
                    this.scroll.scrollToElement(element)
                }
              }
         },
          mounted(){
             this.scroll  = new Bscroll(this.$refs.wrapper)
         },
    }

</script>


<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
}

.title {
  line-height: 0.44rem;
  background: #eee;
  padding-left: 0.2rem;
  color: #666;
  font-size: 0.26rem;
}

.button-list {
  overflow: hidden;
  padding: 0.1rem 0.6rem 0.1rem 0.1rem;

  .button-wrapper {
    float: left;
    width: 33.33%;

    .button {
      margin: 0.1rem;
      border: 0.02rem solid #ccc;
      text-align: center;
      padding: 0.1rem 0;
      border-radius: 0.06rem;
    }
  }
}

.item-list {
  .item {
    line-height: 0.76rem;
    color: #666;
    padding-left: 0.2rem;
  }
}
</style>